Stop-motion for looms.



A. A. GORDON, JR. 7 STOP MOTION FOR LOOMS.

. APPLICATION IILED DEO. 16, 1908. 950,910.

Patented Mar. 1,1910.

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I'I LI iV/ ANDREW a GRAHAM C0. PNOTO-LITHOGRAPNERS. WASNINGION. u. a

. ALBERT A.

3 UNITED STATES PATENT. OFFICE.

GoRDoN, .73., E WORCESTER, MAssAoHUsETTs, ASSIGNOR To onoivrr'ron &KNOWLES Loo1vr WORKS, A CORPORATION 0 MASSACHUSETTS,

sTor-ivrorron Eon. LOOMS.

T 0 all whom it may concern:

.Beit known that I, ALBERT A. GORDON,

wx Jiz, a citizen of. the United States, residing at .Worcester, in thecounty of \Vorcester and State of Massachusetts, have invented certainnew and useful Improvements in Stop-Motions for Looms, of which the.fola lowing is a specification.

M-yinvention relatesto a stop motion for looms, andparticularly to astop motion to automatically stop the loom upon the breakage of aharness strap, or the looseningof a harness from its fastening, and theobject of my invention is to provide mechanism to stop the loom in caseof the breakage of a harness strap, or the loosening of a harness fromits fastening, said mechanism adapted to be used in connection with awarp stop motion. of any usual and well known construction.

. Q My invention consists in certain novel featitres of construction ofmy improvements 1 as will be hereinafter fully described.

I have shown in the drawing my improve= ments combined with a mechanicalwarp stopmotion of the class shown and described in U. SILetters Patent,No. 665,718.

I have only shown in the drawing a de tached portion of a'loom, and awarp stop motionof'the class referred to, and my improvements combinedtherewith, sufiicient to 1 enable those skilled in the art to understandtheconstruction and operation thereof.

Referring to the drawing :Figure 1 is a vertical cross section of adetached portion of a loom, showing the warp stop mechanism, with myimprovements combined therewith. Fig. 2 shows a part of the warp stopmechanism, detached, looking from the opposite end shown in the drawing,with some of the parts in a different position.

In the. accompanying drawing, 1 is the "loom side or end frame, 2 isthelay, 3 the 1 0, over which pass the harness straps 11 to Specificationof Letters Patent.

Patented Mar. 1, 1910.

Application filed December 16, 1908. Serial No. 467,894. 1

the harnesses 12, which form, through the shed harness operatingmechanism, not shown, the shed, by carrying the warp threads 13 up anddown in the usualway. 14 is the bottom shaft.

'The warp stop mechanism, which in this instance is of the class shownin Letters Patent, No. 665,713, above referred to, consists of an endframe 15, suitably supported on a bracket on the loom side.

16 are the warp supporting or lease rods, supported at each end on theend frame 15. The drops, or drop devices 17 are in this instance dividedinto two sets, and one-half are supported 1 on one-half of the warpthreads 13, and the other-half on the other half of the warp threads 13.The drops 17 have in this instance closed slots therein for the guiderodslS, and. open end slots for the guide bars 18, in the usual way.

Extending downwardly from the frame 15 is an arm or bracket'l5,'whichcarries in suitable bearings a rock shaft 19. The rock shaft 19 carriesarms 20, which support at their ends a transverse vibrator bar 20. Onthe outsideof the arm 20 is a stud or pin 21, see Fig. 2, which extendsinto a slot 22 in a lever 22, to operate said lever, which is pivotallymounted on a stud 23 on a lever 24. The upper end of the lever 22, aboveits pivotal support, has a stud 22 thereon, to which is pivotallyconnected one end of a rod 25. The other end of the rod 25, see Fig. 1,is pivotally connected to one arm of a lever 26, which has its hub 26mounted on a stud 27 on astand, not shown, secured to the loom side. Theother arm of the lever 26 issadapted to extend under a stud 28 on adagger 28, which is connected with the shipper lever, or the shippingmechanism of the loom, not shown, and hold said dagger in its raisedposition. 7

When the lever 26 is moved out from under the stud 28 on the dagger 28,the dagger will drop into its lowered position, shown by broken lines inFig. 1, and is then in position to be engaged by the hunter 29 securedon a bracket 30 on the lay 2.

The lever 24 has its hub 24 pivotally mounted on a stud 31 on the endframe 15.

The lever 22 has on one edge a projection 22', against which acts apositioning device 32, which has a flattened end 32 and is carried by aslide rod 33, movably .held in ears 24 on the lever 24. A helicallycoiled expansion spring 34 encircles the rod 33, and bears at one endagainst the end of the positionin device 32, and at its other endagainst one of the cars 24', and acts to yieldingly move forward thepositioning device 32.

The downwardly extending part of the le ver 24 carries a stud 35, onwhich is pivotally supported a block 36, to adjustably receive the upperend of a rod 37. The lower end of the rod 37, see Fig. 1, is providedwith a rod head 38, adjustably secured in a slot 39 in one arm of alever 39, which has its hub 39" pivotally mounted on a stud 40 on theloom side 1. The other arm of the lever 39 has a roll or stud 41thereon, which in this instance travels in a cam groove 42 in a cam 42,which is mounted on the bottom shaft 14.

Through the operation of the cam 42, and the intermediate connectionsabove described, to the lever 24, and the lever 22 pivotally mounted onsaid lever 24, the vibrator bar 20' will have a rocking motion back andforth under the drop devices 17 of the stop motion. As long as the dropdevices 17 are held in their raised position, the vibrator bar 20 willcontinue its rocking motion. When a drop device 17 drops down, in caseof the breaking of a warp thread, said device will be engaged by thetransverse bar 20, and the further movement of said bar and the arm 20supporting said bar, will be prevented, and through the continuedmovement of the lever 24, the lever 22 by reason of its slotted end 22being in engagement with the stud 21 on the lever 20, will be moved onits supporting stud 23, causing the upper end of said lever 22 to bemoved to the position shown in Fig. 2. Through the movement of the lever22, the rod 25 is caused to move the lever 26, and allow the dagger 28to drdp, so that on the forward movement of the lay the bunter 29 willengage the dagger 28, and operate the shipper lever, or shippingmechanism to stop the loom.

All of the above mentioned parts, and the operation thereof, may be ofthe usual and well known construction, and as fully shown and describedin U. S. Letters Patent, No. 665,713, above referred to.

I will now describe my improvements combined with the stop motionmechanism above described, to stop the loom upon the break age of aharness strap, or the loosening of a harness from its fastening.

The cross girt 43 of the loom has in this instance secured thereon thelower end of an upwardly extending stand 44. A stand 44 is preferablylocated on each side of the loom, and each stand 44 has a rearwardlyextending arm 44' thereon. The arms 44 extend in a horizontal planebelow the harnesses 12, and have on their ends a bossl44 which hasloosely mounted therein the trans verse shaft 45. Preferably on bothends of said shaft 45 is fast the hub of a forwardly extending arm 46,which is preferably made of thin sheet metal and extends in itsinoperative position slightly above the upper edge of the arm 44, seeFig. 1.

On the hub of one of the arms 46 is a rearwardly extending arm 47, whichhas a down.- wardly extending projection 47 thereon, provided with a setscrew 48, which engages with its inner end the downwardly extend-- ingprojection 44 on the stand 44, to limit and regulate the downwardmovement of the lever 47. The lever 47 has pivotally connected to itsend the lower end of a connector 49; the other end of the connector 49is pivotally connected with a stud 50' on a lever 50, which has its hubloosely mounted on a stud 51 on a stand 51 secured to the end frame 15of the warp stop motion. The end of the lever 50 has an engaging portion50", which is adapted to be raised into the path of the vibratingtransverse bar 20.

From the above description in connection with the drawing, the operationof my improvements, in connection with the warp stop motion, will bereadily understood by those skilled in the art.

In case a strap of a harness breaks, or the harness is loosened from itsfastening, and

be forced down, causing the rearwardly ex-' tending arm 47 to be raised,as shown by broken lines in Fig. 1, and through the connector 49 thelever 50 will be raised, and its engaging end 50 moved into the path ofthe transverse bar 20 to stop the movement of said bar, and consequentlythrough the mechanism of the warp stop motion above described, stop theloom in the same manner as when a warp thread breaks and a drop devicedrops down. 7

It will be understood that the details of construction of myimprovements may be varied if desired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is In a loom, the combination with theharnesses, and a warp stop motion to automatically stop the loom uponthe breakage of a warp thread, of means, intermediate said harnesses andsaid warp stop.motion, to coupona portion of said means, said meanscomprislng a lever or arm adapted to be engagedby the felling harness,5L second 1eantomaticaiiy stop the ioom, ii'pon the failver or armconnected With the first mening of a harness upon said first mentionedtioned 1 arm, a connector to a pivotally lever or arm.

mounted lever, and saidlever, adapted to be ALBERT A. GORDON, JR. 5moved into the path of a transverse Vibrat- Witnesses: ing bar of saidWarp stop motion, to cause JOHN C. DEWEY,

the operation of said warp stop motion to M. HASS.

